Execute a callback after opening new buffer

[pharaok]

I'm using stickybuf with toggleterm, which sets some window options that stay with the newly opened buffer, so I would like a way to reset them.

Example:

require("stickybuf").pin_filetype(false, function()
  vim.wo.winhighlight = ""
  vim.wo.number = vim.go.number
  vim.wo.relativenumber = vim.go.relativenumber
end)

[stevearc]

I've added this by means of the restore_callback option on the stickybuf.pin function. See the API docs for details